Silica scale inhibition
January 19, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2723956 Copolymers for the control of the formation and deposition of materials in aqueous mediums Silica inhibition: prevention of silica deposition by boric acid/orthorborate ion Water soluble polymers for detergent compositions Use of reducing agents to control scale deposition from high temperature brine Process for dissolving and removing scale from aqueous systems Method for controlling silica/silicate deposition in aqueous systems using phosphonates and carboxylic/sulfonic polymers Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers Dispersion of particulates in an aqueous medium Method for controlling silica/silicate deposition in aqueous systems using 2-phosphonobutane tricarboxylic acid-1,2,4 and anionic polymers Patent #: 5078879 InventorsAssigneeApplicationNo. 005411 filed on 01/19/1993US Classes:210/696, Preventing, decreasing, or delaying precipitation, coagulation or flocculation60/641.2, Geothermal127/61, Evaporating to crystallization166/244.1, PROCESSES210/698, Utilizing organic agent210/701, Acrylic polymer252/175, WATER-SOFTENING OR PURIFYING OR SCALE-INHIBITING AGENTS252/180, Plant or organic material containing252/181With inorganic matter other than alkali-metal hydroxides and carbonates and waterExaminersPrimary: Hruskoci, Peter A.Attorney, Agent or FirmForeign Patent References
International ClassC02F 005/08AbstractA method for inhibiting silica scale formation in aqueous systems using selected low molecular weight (meth)acrylic or maleic acid based copolymers or terpolymers, magnesium ion alone, or the selected copolymers and terpolymers with aluminum ion or magnesium ion, or polyacrylic or polymaleic acid with aluminum ion or magnesium ion.Field of SearchPROCESSESEntraining or incorporating treating material in flowing earth fluid Preventing, decreasing, or delaying precipitation, coagulation or flocculation Utilizing inorganic phosphorus agent Utilizing organic agent Phosphorus containing Nitrogen containing Acrylic polymer Plant or organic material containing With inorganic matter other than alkali-metal hydroxides and carbonates and water WATER-SOFTENING OR PURIFYING OR SCALE-INHIBITING AGENTS Geothermal Evaporating to crystallization | |
